Influence of lesion ratio on diagnostic performance of in-phase/opposed-phase imaging and apparent diffusion coefficient for differentiating acute benign vertebral fractures and metastases.

Background: The usefulness of in-phase/opposed-phase imaging and diffusion weighted imaging (DWI) in differentiating benign and neoplastic vertebral fractures has been described. In this study, we aimed to evaluate the influence of the severity of vertebral damage on the diagnostic performance of these two technologies.

Methods: Totally 59 patients with 68 acute benign vertebral fractures and 43 patients with 79 vertebral metastases were included in this study.

Electrospray ionization tandem mass spectrometric analysis of ent-6,7-seco-kaurane diterpenoids from the Isodon species.

Electrospray ionization tandem mass spectrometry (ESI-MS(n)) using an ion trap instrument and accurate mass measurement on a quadrupole time-of-flight (Q-TOF) mass spectrometer has aided the structural characterization and differentiation of the enmein and spiro-lactone types of ent-6,7-seco-kaurane diterpenoids from Isodon species. The mass spectral fragmentation data from both techniques was compared to obtain the mass spectrometric fragmentation pathways of the ent-6,7-seco-kaurane diterpenoids with high confidence. The analysis revealed that losses of CH(2)O and CO(2) are the predominant process for the enmein type of ent-kauranes in negative ion mode, and the loss of CO(2) is typical for the spiro-lactone type in positive ion mode.

[Role of 16 slices spiral CT angiography with 3-dimensional CT and CT virtual endoscopy in detecting blood supply of lung carcinoma].

Background & Objective: Angiography, a common method in evaluating blood supply of lung carcinoma, is invasive and complicated, with low success rate for bronchial artery, and could not assure to show all supply blood vessels at a time. This study was to explore clinical value of 16 slices spiral CT angiography with 3-dimensional CT (3DCT) and CT virtual endoscopy (CTVE) in diagnosing and evaluating supply blood vessels and blood supply of lung carcinoma, so as to find a non-invasive, safe, simple and effective method in diagnosing blood supply of lung carcinoma.

Methods: A total of 72 patients with pathologically proved lung carcinoma underwent 16 slices spiral CT angiography with 3DCT.

[CT findings of ischemic infarction in relation to neuronal damage in rabbits].

Objective: To explore the early changes in CT findings of ischemic infarction in relation to neuronal damage in rabbits.

Methods: Thirty-two rabbits were divided into control group and experiment groups and scanned with CT 2, 4, 8, 12, 18, 24, and 36 h after ischemic cerebral infarction induced by PVA embolization of the middle cerebral artery (MCA), respectively. The brain specimen were stained with HE, Nissle and TUNEL techniques for pathological examination.

[The value of three-phase pulmonary helical CT in diagnosing peripheral pulmonary cancer (diameter

Objective: To evaluate the value of three-phase pulmonary helical CT in diagnosing peripheral pulmonary cancer (diameter
Methods: Serial single-slice dynamic scans were obtained with helical CT before and after injection of 100 ml contrast material in 60 patients with solitary pulmonary nodules (SPNs, diameter View Article and Find Full Text PDF

[Helical dual-phase CT scan in evaluating blood supply of primary heptocellular carcinoma after transcatheter hepatic artery chemoembolization with lipiodol].

Objective: To evaluate the blood supply of low density viable area of primary heptocellular carcinoma after transcatheter hepatic artery chemoembolization using lipiodol (LP-TACE), by helical dual-phase CT scanning and three dimensional CT (3DCT).

Methods: Thirty-four patients with primary heptocellular carcinoma after LP-TACE were examined by hepatic helical dual-phase CT. 3DCT model of the maximum intensity projection (MIP), surface shaded display (SSD) reconstruction of the hepatic artery and portal vein were simultaneously done in 5 cases.