PET/CT Examination of Teratomas after Stem Cell Transplantation for a Spinal Cord Injury: A Case Report.

Background: In clinical practice, stem cell transplantation has become an effective method for treating spinal cord nerve injury. Up to now, there has been no report on teratoma caused by transplanted stem cell's abnormal differentiation in the clinic, especially in the analysis of imaging manifestations. Therefore, this article aims to analyze the PET/CT imaging manifestations of teratoma caused by stem cell transplantation to improve the imaging diagnosing capability.

[Correlation between age and average apparent diffusion coefficient in normal-appearing cerebral white matter].

Objective: To quantitatively study the effect of ages on the average apparent diffusion coefficient (ADCav) of normal-appearing white matter.

Methods: Fifty patients with normal-appearing white matter were divided into four age groups, namely 16-30 years, (n=13), 31-45 years (n=12), 46-60 years (n=14) and >60 years (n=11). All the subjects were examined with conventional and trace-weighted diffusion imaging in three orthogonal directions.

[Diagnosis of lesions in the major abdominal blood vessels by three-dimensional dynamic contrast-enhanced magnetic resonance angiography].

Objective: To elucidate the working principles of three-dimensional dynamic contrast-enhanced magnetic resonance angiography(3D DCE-MRA)and assess its value in the diagnosis of lesions in the major abdominal blood vessels.

Methods: The imaging data of 3D DCE-MRA and conventional MR examination in 32 cases of suspected major abdominal blood vessel diseases were obtained and analyzed retrospectively.

Results: The peak flow of contrast agents through the abdominal aorta at the level of renal artery occurred 17 to 23 s after the injections.