[Clinical and imaging manifestations of pulmonary mucosa-associated lymphoid tissue lymphoma].

Objective: To investigate the clinical and computed tomography (CT) appearances of pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma.

Methods: The CT findings and clinical data of 13 patients with pathologically proven pulmonary MALT lymphoma were retrospectively reviewed.

Results: Among these 13 patients, seven presented no notable abnormalities, six manifested respiratory symptoms including cough, expectoration, and dyspnea; one of these six patients experienced fever.

Inclusion complex of astaxanthin with hydroxypropyl-β-cyclodextrin: UV, FTIR, 1H NMR and molecular modeling studies.

The structure and complex mode of the inclusion complex of astaxanthin with hydroxypropyl-β-cyclodextrin (HPCD) were investigated by UV, FTIR, 1H NMR and molecular modeling test. UV, FTIR and 1H NMR results indicated that the hexatomic ring of the astaxanthin molecules were partly included into the HPCD cavities. The implementation of molecular modeling test confirmed that the complexation could reduce the energy of the system and the complex of 2:1 host-guest stoichiometry had the lowest ΔE value, -30.

Comparative study of spring dextrin impact on amylose retrogradation.

The effects of spring dextrin on amylose recrystallization were investigated by wide-angle X-ray diffraction (WXRD) and differential scanning calorimetry (DSC). Recrystallinity of amylose was reduced in terms of adding SD(7), SD(9), or SD(11). Alternatively, SD(3) or SD(5) accelerated the degree of crystallinity.

Middle cerebral artery intraplaque hemorrhage: prevalence and clinical relevance.

Objective: Little is known about the composition of middle cerebral artery (MCA) plaques and how they relate to clinical status. Using high-resolution magnetic resonance imaging (HR-MRI), we aimed to examine the occurrence of high signal on T1-weighted fat-suppressed images (HST1) of MCA plaques, which are highly suggestive of fresh or recent intraplaque hemorrhage.

Methods: We retrospectively analyzed the HR-MRI and clinical data of 107 adult patients with high-grade (>70%) MCA stenosis.

Adenosine-stress dynamic myocardial perfusion imaging with second-generation dual-source CT: comparison with conventional catheter coronary angiography and SPECT nuclear myocardial perfusion imaging.

Objective: The purpose of this article is to evaluate the feasibility of adenosine-stress dynamic myocardial perfusion imaging (MPI) with 128-MDCT dual-source CT for detecting myocardial ischemia in comparison with conventional catheter coronary angiography and nuclear MPI.

Subjects And Methods: Thirty patients (21 men and nine women; mean [± SD] age, 59.2 ± 7.

Low-cost production of 6G-fructofuranosidase with high value-added astaxanthin by Xanthophyllomyces dendrorhous.

The effects of medium composition and culture conditions on the production of (6)G-fructofuranosidase with value-added astaxanthin were investigated to reduce the capital cost of neo-fructooligosaccharides (neo-FOS) production by Xanthophyllomyces dendrorhous. The sucrose and corn steep liquor (CSL) were found to be the optimal carbon source and nitrogen source, respectively. CSL and initial pH were selected as the critical factors using Plackett-Burman design.

Detection and localization of active gastrointestinal bleeding with multidetector row computed tomography angiography: a 5-year prospective study in one medical center.

Goal: To prospectively assess the utility of multidetector row computed tomography angiography (MDCTA) in the diagnosis of active gastrointestinal bleeding (GIB).

Background: MDCTA is a relatively recent advance in CT scanning technology enabling excellent vascular visualization and detection of various vascular abnormalities. However, there is no prospective study with a large population evaluating the role of MDCTA in the diagnosis of active GIB.

Plaque distribution of stenotic middle cerebral artery and its clinical relevance.

Background And Purpose: Microanatomy studies reveal that most penetrating branches of middle cerebral artery (MCA) arise from the dorsal-superior surface of the trunk. Using high-resolution MRI, we sought to explore the plaque distribution of MCA atherosclerosis and its clinical relevance in relation to the orifices of penetrating arteries.

Methods: We retrospectively analyzed the imaging and clinical data of 86 patients with atherosclerotic MCA stenosis.

Pancreatic and peri-pancreatic lesions mimic pancreatic islet cell tumor in multidetector computed tomography.

Objective: This pictorial review aimed to summarize the most possible differential diagnosis of pancreatic islet cell tumor (PICT).

Data Sources: Data used in this review were mainly from Medline and Pubmed in English. And all clinical images in this review were from Department of Radiology, Peking Union Medical College Hospital, Beijing, China.

Correlation of adipose volume parameters with anthropometric data in severe obese patients.

Objective: To investigate the whole body fat distribution in severe obese patients with multi-slice spiral CT, and to explore the correlation between adipose volume parameters and anthropometric data.

Methods: Totally 14 severe obese patients were enrolled and examined with multi-slice spiral CT. Total adipose tissue (TAT) volume and visceral adipose tissue (VAT) volume were measured using Volume software.

T2 mapping of articular cartilage in knee osteoarthritis using a magnetic resonance staging.

Objective: To evaluate T2 mapping of articular cartilage in knee osteoarthritis (OA).

Methods: Totally 38 healthy subjects (group H) and 53 OA patients received scoring with the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)and underwent T2 mapping of tibiofemoral articular cartilages. The T2 values in 10 subregions of the cartilages were measured.

Investigation of the interactions between the hydrophobic cavities of cyclodextrins and pullulanase.

The effects of cyclodextrins and derivatives on the activity and structure of pullulanase were investigated in this study. Our results showed that cyclodextrins and derivatives decreased the activity of pullulanase. This decrease was attributed to the interaction between the hydrophobic cavities of cyclodextrins and pullulanase.

[Dual-source computed tomographic angiography using triple-rule-out protocols in combination with abdominal computed tomographic angiography for evaluation of aortic dissection].

Objective: To explore the clinical value of "triple-rule-out" protocols using dual-source computed tomography for aortic dissection (AD) assessment.

Methods: Totally 25 patients suspecting of suffering from AD were examined on a dual-source computed tomography scanner. Two-dimensional and three-dimensional reconstruction was performed in all patients by means of multiplanar reconstruction, curved planar reformation, maximum intensity projection, and volume rendering.

[Features of eight segments of liver perfusion with the second generation dual-source computed tomography].

Objective: To explore the features of eight segments of liver perfusion with the second generation dual-source computed tomography (DSCT) .

Methods: Totally 15 patients with pancreatic endocrine diseases underwent abdominal CT perfusion with the second generation DSCT. The liver perfusion images were then transferred to workstation, and perfusion parameters were calculated, and then the artery liver perfusion (ALp) , portal-vein liver perfusion (pVp) , and hepatic perfusion index (HpI) of the eight hepatic segments were calculated.

[Clinical application of dual-source computed tomographic urography using dual-energy virtual non enhanced computed tomography].

Objective: To evaluate the clinical feasibility of dual-source computed tomographic urography using dual-energy virtual non-enhanced CT.

Methods: Totally 240 patients received dual-source CT, which included true non-enhanced CT (TNCT) , nephrographic phase scanning with dual-energy mode (100kVp/230mAs and Sn140kVp/178mAs) , and excretory phase scanning. A contrast bolus injection of 100 ml (370 mgI/ml) contrast agent was applied (4.

[Application of dual-energy computed tomography for detecting uric acid deposition in patients with gout].

Objective: To assess the value of dual energy computed tomography (DECT) for the detection of uric acid (UA) deposition in patients with gout.

Methods: A total of 37 patients with tophaceous gout (including 8 crystal-proven cases) and 10 control patients (5 with unknown arthropathy, 3 with rheumatoid arthritis, and 2 with osteoarthritis) were included. DECT was performed for all peripheral joints (wrists, hands, elbows, knees, ankles and feet) .

[Application of second generation dual-source computed tomography dual-energy scan mode in detecting pancreatic adenocarcinoma].

Objective: To analyze the clinical value of multiple sequences derived from dual-source computed tomography (DSCT) dual-energy scan mode in detecting pancreatic adenocarcinoma.

Methods: Totally 23 patients with clinically or pathologically diagnosed pancreatic cancer were enrolled in this retrospective study. DSCT (Definition Flash) was used and dual-energy scan mode was used in their pancreatic parenchyma phase scan (100kVp/230mAs and Sn140kVp/178mAs) .

[Dual-energy computed tomographic angiography of head and neck arteries with different contrast material doses in second generation dual-source computed tomography system].

Objective: To explore the feasibility of a dual-energy computed tomographic angiography (DECTA) protocol using test-bolus injection with reduction of contrast material (CM) dose in second generation dual-source CT system.

Methods: Totally 57 consecutive patients underwent CT angiography scan covering the cervical and cerebral arteries. CT was performed with second generation dual-source CT system.

Computed tomographic angiography for evaluation of the relationship between coronary artery stenosis and head and neck artery stenosis.

Objective: To evaluate the relationship between coronary artery stenosis and internal carotid artery, vertebral and basilar artery stenosis using computed tomographic angiography.

Methods: The imaging and clinical data of 84 patients who underwent coronary, head and cervical computed tomographic angiography in our hospital between September 2008 and June 2010 were retrospectively analyzed. Segment stenosis scoring was performed to quantify the degree of stenosis of coronary arteries.

[Dual-energy computed tomographic angiography of head and neck with dual-source computed tomography: image quality and radiation dose].

Objective: To investigate the image quality and radiation dose of dual-energy (DE) computed tomographic angiography (CTA) of head and neck.

Methods: We retrospectively analyzed two groups of patients (both n=30) undergoing 64-slice spiral CTA of cervical and cranial regions with different scan protocols. The DE group was obtained with 140/80 kVp, 64/272 mAs, 0.

[Comparison of prospectively electrocardiographic triggered spiral and sequential acquisition for coronary computed tomographic angiography using dual-source computed tomography].

Objective: To compare the image quality and radiation dose of prospectively electrocardiogram (ECG) -triggered spiral and sequential acquisition for coronary computed tomographic angiography by dual-source computed tomography.

Methods: Sixty patients with suspected or known coronary artery disease were randomly divided into two groups. Group A underwent prospective ECG-triggering spiral scan and Group B underwent prospective ECG-triggering sequential scan.

[Assessment of coronary stent lumen visibility and patency by dual-source computed tomographic angiography].

Objective: To assess the in-stent lumen visibility and image quality of coronary stents by dual-source computed tomography (DSCT) coronary angiography, and the diagnostic accuracy of DSCT in the detection of coronary in-stent restenosis.

Methods: DSCT was performed at 147 stents in 78 patients at an interval of (21.8?22.

[Coronary computed tomographic angiography using low-dose prospectively electrocardiographic triggered high-pitch spiral acquisition by dual-source computed tomography: image quality and radiation dose].

Objective: To evaluate image quality (IQ) and radiation exposure of coronary computed tomographic angiography (CTA) with prospectively electrocardiographic (ECG) triggered high-pitch spiral acquisition using dual source CT.

Methods: Totally 75 consecutive patients with a stable heart rate (HR) ≤65 bpm underwent coronary CTA. patients were divided into two groups according to their HR (group A HR≤60 bpm, group B HR >60 bpm to≤65 bpm) .

Isolation of cycloamylose by iodine affinity capillary electrophoresis.

In contrast to α-, β- and γ-cyclodextrins, little information is available on the isolation and separation of cycloamylose (CA) with degree of polymerization (DP) larger than 22. The objective of the current study was to develop a new iodine affinity capillary electrophoresis (CE) for separation of CA with DP of 22-42, which was based on the formation of CA-iodine inclusion complexes, CA with twisted conformations made complicated mobility behaviors on CE instead of merely size dependent. The influences of iodide/iodine ratio, iodine concentration, pH, ion strength of running phosphate buffer, voltage, and temperature on the peak resolution and electrophoretic mobility were further investigated.

[Diagnosis and treatment of cervical ectopic pregnancy].

Objective: To investigate the diagnosis and treatment of cervical ectopic pregnancy.

Methods: The clinical data of 27 patients with cervical ectopic pregnancy who were treated in Peking Union Medical College Hospital from January 1990 to November 2009 were retrospectively reviewed. The clinical effectiveness of three fertility-preserved treatment modes were compared.