Submucosal Enhancing Stripe as a Contrast Material-enhanced MRI-based Imaging Feature for the Differentiation of Stage T0-T1 from Early T2 Rectal Cancers.

Background Accurate differentiation of stage T0-T1 rectal tumors from stage T2 rectal tumors facilitates the selection of appropriate surgical treatment. MRI is a recommended technique for local staging, but its ability to distinguish T1 from T2 tumors is poor. Purpose To explore the value of a submucosal enhancing stripe (SES), an uninterrupted enhancing band between the rectal tumor and the muscular layer on contrast material-enhanced T1-weighted images, as a potential imaging feature to differentiate T0-T1 from T2 rectal tumors.

Diagnostic value of single-source dual-energy spectral computed tomography for papillary thyroid microcarcinomas.

Background: Ultrasound (US) and computed tomography (CT) are common diagnostic imaging methods for detecting and diagnosing papillary thyroid microcarcinoma (PTMC). However, single-source dual-energy spectral computed tomography (spectral CT) reduces beam hardening artefacts and optimizes contrast, which may add value in detecting PTMC.

Objective: To investigate values of applying single-source dual-energy spectral CT for diagnosing PTMCs, in comparison with high frequency ultrasound and conventional polychromatic images.

Improvement in the Detection of Cystic Metastatic Papillary Thyroid Carcinoma by Measurement of Thyroglobulin in Aspirated Fluid.

Cystic change in metastatic lymph nodes of papillary thyroid carcinoma (PTC) is a diagnostic challenge for fine needle aspiration (FNA) because of the scant cellularity. The aim of this study was to evaluate the measurement of thyroglobulin in fine needle aspirate (Tg-FNA) for detecting metastatic PTC in patients with cystic neck lesions and to validate the optimal cutoff value of Tg-FNA. A total of 75 FNA specimens of cystic lesions were identified, including 40 of metastatic PTC.

Small Bowel Stromal Tumors: Different Clinicopathologic and Computed Tomography Features in Various Anatomic Sites.

Gastrointestinal stromal tumors (GISTs) can present with different clinical and immunohistochemical characteristics according to different anatomic sites. The aim of this study was to compare clinicopathologic and computed tomography (CT) features of small bowel stromal tumors located in the duodenum, jejunum, and ileum. In total, 197 patients (109 male, 88 female) with small bowel GISTs were retrospectively reviewed.

Feasibility Study of Using Gemstone Spectral Imaging (GSI) and Adaptive Statistical Iterative Reconstruction (ASIR) for Reducing Radiation and Iodine Contrast Dose in Abdominal CT Patients with High BMI Values.

Purpose: To prospectively investigate the effect of using Gemstone Spectral Imaging (GSI) and adaptive statistical iterative reconstruction (ASIR) for reducing radiation and iodine contrast dose in abdominal CT patients with high BMI values.

Materials And Methods: 26 patients (weight > 65kg and BMI ≥ 22) underwent abdominal CT using GSI mode with 300mgI/kg contrast material as study group (group A). Another 21 patients (weight ≤ 65kg and BMI ≥ 22) were scanned with a conventional 120 kVp tube voltage for noise index (NI) of 11 with 450mgI/kg contrast material as control group (group B).

Value of R2* obtained from T2*-weighted imaging in predicting the prognosis of advanced cervical squamous carcinoma treated with concurrent chemoradiotherapy.

Background: To prospectively investigate the value of R2* in predicting the prognosis of advanced cervical squamous carcinoma treated with concurrent chemoradiotherapy.

Methods: Sixty-five patients with biopsy-proven cervical squamous carcinoma were enrolled in our study. All these subjects underwent multi-echo T2*-weighted MR imaging on a 3.

Value of whole-tumor dual-input perfusion CT in predicting the effect of multiarterial infusion chemotherapy on advanced non-small cell lung cancer.

Objective: The purposes of this study were to prospectively evaluate tumor perfusion using whole-tumor dual-input perfusion CT in advanced non-small cell lung cancer treated with multiarterial infusion chemotherapy and to determine whether treatment effect can be predicted in light of perfusion parameters.

Subjects And Methods: Forty-two patients with advanced non-small cell lung cancer were enrolled in this study. Whole-tumor dual-input perfusion CT was performed for all these patients, who subsequently received multiarterial infusion chemotherapy.

Time-intensity curve parameters in rectal cancer measured using endorectal ultrasonography with sterile coupling gels filling the rectum: correlations with tumor angiogenesis and clinicopathological features.

The primary aim of this study was to investigate the relationship between contrast-enhanced ultrasonography (CEUS) imaging parameters and clinicopathological features of rectal carcinoma and assess their potential as new radiological prognostic predictors. A total of 66 rectal carcinoma patients were analyzed with the time-intensity curve of CEUS. The parameter arrival time (AT), time to peak enhancement (TTP), wash-in time (WIT), enhanced intensity (EI), and ascending slope (AS) were measured.

Ultrasound findings of papillary thyroid microcarcinoma: a review of 113 consecutive cases with histopathologic correlation.

Papillary thyroid microcarcinoma (PTMC) is a malignant thyroid tumor of less than 1 cm in size. Ultrasound (US) is the preferred imaging modality for PTMC. This study retrospectively evaluated the US results from 113 consecutive cases of PTMC with 127 nodules and correlated the results with the histopathologic findings.

[Impact of 2009 FIGO staging system on the diagnostic value of preoperative MRI staging of endometrial carcinoma].

Objective: To analyze the changes of 2009 FIGO staging system compared with the 1988 FIGO staging system of endometrial carcinoma and evaluate the diagnostic value of MRI staging by the 2009 FIGO criteria.

Methods: A retrospective study was performed on 63 consecutive patients with pathologically confirmed endometrial carcinoma who were treated by surgery initially from January to December 2009. The diagnostic value of preoperative MRI by the 2009 FIGO staging system was compared with that using the 1988 FIGO system, respectively.

Improvement in T-staging of rectal carcinoma: using a novel endorectal ultrasonography technique with sterile coupling gel filling the rectum.

Our purpose was to study the accuracy of using endorectal ultrasonography (ERUS) with sterile coupling gels filling the rectum in the preoperative T-staging of rectal carcinoma. A total of 189 patients with confirmed rectal carcinoma were recruited. All underwent ERUS and surgery within the week following sonography.

The value of perfusion CT in predicting the short-term response to synchronous radiochemotherapy for cervical squamous cancer.

Objective: To determine the value of the perfusion parameters in predicting short-term tumour response to synchronous radiochemotherapy for cervical squamous carcinoma.

Methods: Ninety-three patients with cervical squamous carcinoma later than stage IIB were included in this study. Perfusion CT was performed for all these patients who subsequently received the same synchronous radiochemotherapy.

[Evaluation of the efficacy of bronchial arterial infusion chemotherapy for the treatment of central non-small cell lung cancer].

Objective: To evaluate the long-term efficacy of bronchial arterial infusion (BAI) chemotherapy in the treatment of centeral non-small cell lung cancer.

Methods: Fifty-eight patients with central non-small-cell lung cancer, who were assessed as difficult operable or non-operable by imaging examination, received BAI of cisplatin, epirubicin and mitomycin alone or in combination. It includes 51 cases of squamous cell carcinoma, 6 cases of adenocarcinoma and 1 case of adenosquamous carcinoma.

[CT features of ovarian Brenner tumor and a report of 9 cases].

Objective: In order to improve the preoperative diagnostic accuracy, the computed tomographic (CT) features of ovarian Brenner tumor were described and analyzed.

Methods: CT image and clinical data of nine patients with pathologically confirmed Brenner tumor were collected and analyzed retrospectively. There were 8 benign lesions and 1 borderline lesion.

[Preliminary application of diffusion-weighted imaging with 3.0 T magnetic resonance scanner for nasopharyngeal carcinoma].

Objective: To evaluate the clinical value of diffusion-weighted imaging (DWI) with 3.0 T magnetic resonance scanner for nasopharyngeal carcinoma (NPC) and to explore the appropriate b value during this procedure.

Methods: Totally 50 patients with histopathologically confirmed NPC and 20 volunteers underwent DWI using single-shot echo-planar imaging technique were enrolled in this study.

[Role of 125I seed implantation in treatment of unresectable pancreatic cancer].

Objective: To study the role of (125)I seed implantation in the treatment of unresectable pancreatic cancer.

Methods: From April 2004 to march 2006, 66 untreated patients with locally advanced pancreatic cancer (LAPC) were randomized into two groups: Group A: (125)I seeds implantation (n = 31) and Group B: control (n = 34). The objective tumor response, clinical benefit response, toxicity, complications and survival of two groups were observed.

[Value of high-field MR diffusion-weighted MR imaging in the diagnosis of endometrial carcinoma].

Objective: To investigate the usefulness of high-field MR diffusion-weighted imaging (DWI) in the diagnosis of endometrial carcinoma.

Methods: Thirty-five female patients with pathologically proven endometrial carcinoma, 10 patients with pathologically proven endometrial dysplasia and 41 normal volunteers were enrolled into this study. MR images were obtained at a 3.

[Sonographic evaluation of the special thyroid carcinoma].

Objective: To analyze the cases of thyroid carcinoma with special sonographic features, so as to increase the accuracy of sonographic diagnosis for thyroid carcinoma.

Methods: The sonographic characteristics of 9 patients with special sonographic appearance were analyzed. According to the sonographic features, they were divided into two kinds: 8 cases suffered from thyroid diffuse malignant lesions, and one case showed cystic lesion sticking out of the thyroid.

Post-radiation CT changes and recurrent nasopharyngeal carcinoma.

Background: Nasopharyngeal carcinoma (NPC) is endemic in Southern Asia. Radiation therapy remains the mainstay of treatment strategies for NPC. Although approximately 19% - 56% of patients develop a recurrent disease 5 years after their primary treatment, recognition of post-radiation changes and early detection of relapse are important in improving the outcome of NPC.

[Value of high-resolution ultrasonography in differential diagnosis of cervical cystic lesions].

Objective: To analyze ultrasonographic features of the different kinds of cervical cystic lesions, and propose differential diagnostic standard for these lesions based on the evidence of high resolution ultrasonography.

Methods: The clinical data of 107 patients with different kinds of cervical cystic lesions were analyzed. The role of gray scale and colour Doppler sonography for such lesions was prospectively studied.

[Value of multi-slice helical CT in the diagnosis and differential diagnosis of thyroid lesions].

Objective: To investigate the value of multi-slice helical CT in the differentiation of benign from malignant thyroid lesions.

Methods: The multi-slice helical CT images of 72 patients with 82 thyroid lesions were prospectively studied. The CT features including the margin, density of the lesion and cervical lymph node enlargement were evaluated double-blindly.

[Value of MRI in the assessment of invasion depth by endometrial carcinoma].

Objective: To evaluate the value of MR imaging in the assessment of invasion depth by endometrial carcinoma.

Methods: Data of 122 patients with endometrial carcinoma proved by postoperative pathology were retrospectively reviewed. Preoperatively, all patients underwent conventional and contrast-enhanced MR scan.

[Diagnostic value of ultrasonography in thyroid lesions].

Objective: To analyse ultrasonographic mapping of the thyroid lesions, so as to summarize ultrasonographic characteristics, and improve the accuracy rate of preoperative diagnosis for thyroid lesions.

Methods: The clinical data were analyzed for 1700 patients with different thyroid lesions who were treated between January 2002 and December 2005. The appearance of gray scale and colour Doppler sonography for the lesions was prospectively studied, the different blood flow index was determined.