Investigation of an optimized scanning protocol for the dentomaxillofacial region using 320-slice multidetector computed tomography.

Objectives: To propose an imaging protocol that provides satisfactory image quality for oral examination while minimizing radiation dosage using 320-slice multidetector CT (MDCT).

Methods: An anthropomorphic head phantom was scanned using 320 MDCT with protocols combining different scanning modes: volume scanning (whole or local) vs helical scanning (80- or 64-slice detectors); tube voltage settings (80 kVp, 120 kVp and 135 kVp); and tube current settings (60 mA, 80 mA, 100 mA and 120 mA). A total of six anatomical bone structures and three anatomical soft-tissue structures were assessed using quantitative and qualitative analysis in the three orthographic planes (axial, sagittal and coronal).

A multicentre retrospective study of transcatheter angiographic embolization in the treatment of delayed haemorrhage after percutaneous nephrolithotomy.

Objective: The objective is to determine the timing and indications of transcatheter angiographic embolization (TAE) for delayed haemorrhage after percutaneous nephrolithotomy (PCNL).

Methods: The medical records of 144 patients who underwent arteriography and TAE for delayed post-PCNL haemorrhage at five university hospitals between January 2005 and December 2012 were reviewed retrospectively.

Results: The mean time to the onset of post-PCNL haemorrhage was 10.

[Relationship between hMSH2 and FHIT gene expression in non-small cell lung cancer].

Background & Objective: Abnormality of FHIT gene has been proved to be frequent in certain malignant tumors closely related to environmental oncogenic factors, such as lung cancer. Foreign scholars have begun to explore the relationship between FHIT gene and other tumor suppressor genes, which are implicated in the pathogenesis of lung cancer. This study was designed to investigate the relationship between hMSH(2) and FHIT protein expression and to explore the correlation of hMSH(2) and FHIT protein expression with clinicopathologic features of lung cancer.

[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.

[Expression of HIF-1 alpha and its relationship to apoptosis and proliferation in lung cancer].

Background & Objectives: Hipoxia-inducible factor-1 is a transcriptive factor that regulates genes involved in metabolism, angiogenesis, proliferation, and apoptosis. This study was designed to investigate the expression of hypoxia inducible facter-1 alpha(HIF-1 alpha) and its relationship to bcl-2, Bax, PCNA in lung cancer.

Method: Immunohistochemical streptavidin/peroxidase(SP) was used to examine the expression of HIF-1a, bcl-2, Bax, and PCNA in 60 cases of lung cancer.