Reliability and readability analysis of ChatGPT-4 and Google Bard as a patient information source for the most commonly applied radionuclide treatments in cancer patients.

PURPOSE: Searching for online health information is a popular approach employed by patients to enhance their knowledge for their diseases. Recently developed AI chatbots are probably the easiest way in this regard. The purpose of the study is to analyze the reliability and readability of AI chatbot responses in terms of the most commonly applied radionuclide treatments in cancer patients. METHODS: Basic patient questions, thirty about RAI, PRRT and TARE treatments and twenty-nine about PSMA-TRT, were asked one by one to GPT-4 and Bard on January 2024. The reliability and readability of the responses were assessed by using DISCERN scale, Flesch Reading Ease(FRE) and Flesch-Kincaid Reading Grade Level(FKRGL). RESULTS: The mean (SD) FKRGL scores for the responses of GPT-4 and Google Bard about RAI, PSMA-TRT, PRRT and TARE treatmens were 14.57 (1.19), 14.65 (1.38), 14.25 (1.10), 14.38 (1.2) and 11.49 (1.59), 12.42 (1.71), 11.35 (1.80), 13.01 (1.97), respectively. In terms of readability the FRKGL scores of the responses of GPT-4 and Google Bard about RAI, PSMA-TRT, PRRT and TARE treatments were above the general public reading grade level. The mean (SD) DISCERN scores assesses by nuclear medicine phsician for the responses of GPT-4 and Bard about RAI, PSMA-TRT, PRRT and TARE treatments were 47.86 (5.09), 48.48 (4.22), 46.76 (4.09), 48.33 (5.15) and 51.50 (5.64), 53.44 (5.42), 53 (6.36), 49.43 (5.32), respectively. Based on mean DISCERN scores, the reliability of the responses of GPT-4 and Google Bard about RAI, PSMA-TRT, PRRT, and TARE treatments ranged from fair to good. The inter-rater reliability correlation coefficient of DISCERN scores assessed by GPT-4, Bard and nuclear medicine physician for the responses of GPT-4 about RAI, PSMA-TRT, PRRT and TARE treatments were 0.512(95% CI 0.296: 0.704), 0.695(95% CI 0.518: 0.829), 0.687(95% CI 0.511: 0.823) and 0.649 (95% CI 0.462: 0.798), respectively (p < 0.01). The inter-rater reliability correlation coefficient of DISCERN scores assessed by GPT-4, Bard and nuclear medicine physician for the responses of Bard about RAI, PSMA-TRT, PRRT and TARE treatments were 0.753(95% CI 0.602: 0.863), 0.812(95% CI 0.686: 0.899), 0.804(95% CI 0.677: 0.894) and 0.671 (95% CI 0.489: 0.812), respectively (p < 0.01). The inter-rater reliability for the responses of Bard and GPT-4 about RAI, PSMA-TRT, PRRT and TARE treatments were moderate to good. Further, consulting to the nuclear medicine physician was rarely emphasized both in GPT-4 and Google Bard and references were included in some responses of Google Bard, but there were no references in GPT-4. CONCLUSION: Although the information provided by AI chatbots may be acceptable in medical terms, it can not be easy to read for the general public, which may prevent it from being understandable. Effective prompts using 'prompt engineering' may refine the responses in a more comprehensible manner. Since radionuclide treatments are specific to nuclear medicine expertise, nuclear medicine physician need to be stated as a consultant in responses in order to guide patients and caregivers to obtain accurate medical advice. Referencing is significant in terms of confidence and satisfaction of patients and caregivers seeking information.

Cancers and Benign Processes on 68 Ga PSMA PET-CT Imaging Other than Prostate Cancer.

Background Imaging plays an important role in the evaluation of prostate cancer patients. In recent years, much attention has been focused on gallium 68 prostate-specific membrane antigen positron emission tomography-computed tomography ( 68 Ga PSMA PET-CT) in prostate cancer patients and has been widely used for staging, restaging, and therapy response for these patients. The aim of this study was to report 68 Ga PSMA PET-CT in other cancers and benign processes incidentally detected on 68 Ga PSMA PET-CT in patients with prostate cancer. Materials and Methods A total of 600 68 Ga PSMA PET-CT scans were performed for initial staging, restaging, detection of suspected recurrence, and therapy response in prostate cancer patients between December 2018 and June 2020. A total of 38 patients with histopathologically proven prostate cancer were included in the current study with other malignancies and benign processes. Mainly histopathology in most of cases and clinical and radiological follow-up in few cases after PET/CT scanning served as the standard of reference. Results A total of 38 patients (age range: 52-85 years; mean age: 68.6) with prostate cancer final histopathology results were included in the study. A total of 51 lesion sites were evaluated in 38 patients. Forty-one lesion regions of these 51 regions were based on histopathological diagnosis, whereas 10 of them were based on clinical follow-up and conventional radiological follow-up as differential criteria. Thirty of 51 lesion regions were evaluated as malignant and 21 were benign lesions. The most common 68 Ga PSMA ligand avid malignancy was lung adenocarcinoma (6/38). Conclusions Prostate-specific membrane antigen (PSMA) is a cell surface glycoprotein and mainly expressed in prostate epithelium. 68 Ga PSMA PET-CT imaging is very sensitive and specific imaging modality in prostate cancer patients. However, other malignancies and some benign processes may also have 68 Ga PSMA ligand avidity and some prostate cancer metastases may imitate other malignancies.

"Hot Lung" Sign in Pulmonary Intravascular Large B-Cell Lymphoma on 18F-FDG PET/CT.

Intravascular large B-cell lymphoma is a rare type of non-Hodgkin lymphoma characterized by intravascular proliferation of clonal lymphocytes within the lumen of small vessels, which is often fatal. Diffuse FDG uptake in the lung without clear/evident CT findings, "hot lung," is quasi-pathognomonic for lung intravascular large B-cell lymphoma. In this report, we present the case of a 43-year-old man who was diagnosed as having intravascular lymphoma thanks to this rare finding.

Comparison of ventilation-perfusion scintigraphy with MR angiography in patients with Swyer-James syndrome.

PURPOSE: The aim of this study was to establish the value of magnetic resonance angiography (MRA) in diagnosing) Swyer-James syndrome (SJS) and to compare MRA and ventilation-perfusion (V/Q) scan results in patients with established SJS. METHODS: The V/Q scans and the MRA findings of 22 lungs of 11 patients with SJS (6 males, 5 females; age range: 17-69 years, mean: 38.4 years) were retrospectively studied. The perfusion scan was performed after the injection of Tc macroaggregated albumin. After 2 days, the ventilation scan was performed by using Tc diethylene triamine penta-acetic acid aerosol. The MRA was performed with a 1.5 T magnetic resonance unit. We compared the MRA and V/Q scan findings of the lungs of the patients. RESULTS: The V/Q scans showed the characteristic pattern of a matched V/Q defect on the affected lungs. The MRA displayed a smaller pulmonary artery and markedly poor peripheral vasculature on the affected side in all patients. The MRA had a sensitivity of 84.6%, a specificity of 100% for the detection SJS. Interobserver variability was minimum as indicated by a weighted kappa statistic of 0.818. CONCLUSION: This study indicates that the MRA is a fast, accurate, without radiation, and noninvasive technique for supporting the diagnosis of SJS. But, V/Q scans showed additional segmental perfusion/ventilation abnormalities on contralateral lung to reveal the segmental involvement of SJS. As a result, the MRA has no more any extra advantages for patient management.

Thyroid hemiagenesis and Graves' disease in a child.

Hemiagenesis of the thyroid is a rare malformation and Graves' disease with ophthalmopathy is reported quite rarely in adult patients but is not seen in children. This is a report of an 8-year-old girl with congenital absence of the left thyroid lobe, or hemiagenesis.