HIV Infection Complicated with Cytomegalovirus Colitis: A Case Report of 18FFDG PET/CT Imaging.

Background: Cytomegalovirus (CMV) infection is common in the digestive and central nervous systems and can infect the entire digestive tract from the mouth to the rectum. In immunocompromised patients, CMV infection is prone to develop into CMV disease, especially in Acquired Immune Deficiency Syndrome (AIDS) patients. Severe cases may accelerate the progression of AIDS patients and form systemic CMV infection.

Effects of Iodinated Contrast-enhanced CT on Urinary Iodine Levels in Postoperative Patients with Differentiated Thyroid Cancer.

Aims: This study aims to observe the fluctuating urine iodine levels in patients with differentiated thyroid cancer (DTC) following iodinated contrastenhanced computed tomography (eCT) scans.

Background: The presence of iodine in iodinated contrast agents (ICAs) can impede the effectiveness of radioactive iodine treatment (RAIT) and diagnostic scans in individuals diagnosed with DTC, as it can engage in competitive interactions with 131I. According to established guidelines, it is recommended to postpone RAIT for a period of three to four months in individuals who have had prior exposure to ICAS.

Compact optically pumped cesium beam atomic clock with a 5-day frequency stability of 7×10.

Compared to other commercial atomic clocks in the time keeping field, the greatest advantage of cesium beam atomic clocks is their superior long-term stability. Compared to magnetic state-selection clocks, optically pumped cesium beam atomic clocks have more interacting atoms, which results in better stability potential. To achieve good long-term stability, we propose methods including stabilization of laser power and reconstruction of circuits.

Preliminary Study on the Relationship of Mutations with the Outcome of the First I Radiotherapy and Malignant Biological Characteristics in Papillary Thyroid Carcinoma.

Objective: To investigate the relationship of mutation with the outcome of the first postoperative I treatment and malignant biological characteristics in papillary thyroid carcinoma (PTC).

Methods: Thirty-three patients with PTC who underwent their first I treatment after total thyroidectomy were enrolled in this study. mutation in postoperative tumor tissue and circulating tumor DNA (ctDNA) in peripheral blood at the time of I treatment were detected.

A linewidth locking method to control the microwave power in optically pumped cesium-beam clocks.

In this paper, we present a linewidth locking method to control the microwave power in optically pumped cesium-beam frequency standards. The responses of optically pumped cesium-beam tubes and classical cesium-beam tubes are analyzed and compared against the power of the microwave field. Due to the wide probability distribution of atomic velocity resulting from the optical state preparation and detection, the linewidth of the Ramsey pattern is sensitive to the microwave power.

Frequency instability of a miniature optically pumped cesium-beam atomic frequency standard.

This paper proposes a miniature optically pumped cesium-beam atomic frequency standard with a volume of 38.4 l and a weight of 28 kg and examines the main factors that affect its signal-to-noise ratio (SNR). Methods to improve the SNR are proposed, which improve the short-term frequency instability: installing a collimator at the exit of the cesium oven, using the beam fluorescence spectrum with the fiber-coupled output to stabilize the laser frequency, and using the 4-5 cycling transition of the cesium D line for the atomic detection.

Impact factors for the outcome of the first I radiotherapy in patients with papillary thyroid carcinoma after total thyroidectomy.

Objective: To investigate the impact factors of the outcome of the first I treatment in patients with papillary thyroid carcinoma (PTC) after total thyroidectomy.

Methods: Three hundred and fifty-three patients [256 females, 97 males, average age (43.58 ± 12.

Experimental study on the therapeutic effect of positron emission tomography agent [¹⁸F]-labeled 2-deoxy-2-fluoro-d-glucose in a colon cancer mouse model.

The purpose of this study was to assess the therapeutic effect of positron emission tomography agent [¹⁸F]-labeled 2-deoxy-2-fluoro-d-glucose (¹⁸F-FDG) in a colorectal cancer mouse model. Three (3) tumor-bearing mice groups were treated with different doses of ¹⁸F-FDG. Mice were imaged by positron emission tomography with ¹⁸F-FDG before and after treatment weekly and the tumor growth rate was calculated.

11C-NMSP/ 18F-FDG microPET to monitor neural stem cell transplantation in a rat model of traumatic brain injury.

Purpose: To investigate whether (11)C-N-methylspiperone ((11)C-NMSP) microPET could be used for imaging neural stem cells (NSCs) transplantation in a rat model of traumatic brain injury.

Methods: NSCs were induced to express dopamine receptor type 2 (DRD(2)), then confirmed by RT-PCR, Western blotting and immunocytochemistry. Eighteen rats were subjected to focal traumatic brain injury in the right parietal lobe and then assigned randomly to the transplantation group and the control group.