Prediction of feeding difficulties in neonates with hypoxic-ischemic encephalopathy using magnetic resonance imaging-derived radiomics features.

BACKGROUND: The mechanisms behind brain and spinal cord injuries in hypoxic-ischemic encephalopathy (HIE) and associated feeding difficulties are unclear, with previous magnetic resonance imaging (MRI) attempts yielding inconclusive results. OBJECTIVE: We aim to evaluate an MRI radiomics model for predicting feeding difficulties in HIE infants. Additionally, we investigate changes in predictive capability after incorporating the duration of mechanical ventilation and the timing of MRI examination. MATERIALS AND METHODS: Retrospective study with 151 HIE infants (January 2013 to December 2021), randomly divided into training and validation sets. Radiomics features extracted from basal ganglia-thalamus and brainstem in T1-weighted and T2-weighted MRI. Established single-modality, single-site, and multimodality/multisite models. Receiver operating characteristic analysis and area under the curve evaluated models. Decision curve analysis assessed changes in predictive capability. RESULTS: The combined radiomics model of the basal ganglia-thalamus and brainstem regions on the T2-weighted imaging demonstrated superior performance (area under the curve: 0.958 and 0.875 for training and validation, respectively). Combining scores with duration of mechanical ventilation and MRI examination time in a calibration plot model improved and stabilized performance, showing high fitting and clinical utility. Decision curve analysis favored the combined calibration plot model. CONCLUSION: The MRI-based radiomics model predicts feeding difficulties in HIE infants, with basal ganglia-thalamus and brainstem as relevant factors. The combined calibration plot model exhibits the highest clinical predictive efficacy.

CD5-positive marginal zone lymphoma: Clinicopathological features and survival outcomes.

BACKGROUND: CD5 expression in different B-cell lymphomas has different clinicopathological and prognosis and the value of CD5 expression in marginal zone lymphoma is undefined. METHODS: Clinicopathological features, survival outcomes of marginal zone lymphoma were retrospectively analyzed in 204 patients. We classified patients into (i) CD5-positive marginal zone lymphoma (ii) CD5-negative marginal zone Lymphoma, Fisher's exact test was used to compare the CD5-positive and CD5-negative marginal zone lymphoma. Progression-free survival (PFS) and overall survival (OS) curves were summarized by Kaplan-Meier method and compared using the log-rank test. RESULTS: Of the 204 patients, 48 (23.53%) were CD5-positive. The 5-year PFS and OS rates for CD5-positive marginal zone lymphoma were 64.80% and 84.10%, there was no significant difference between CD5-positive and CD5-negative (P > 0.05). Diffuse large B cell lymphoma (DLBCL) transformation was pathologically indicated in 6 patients, of which 5 (83.33%) patients were CD5-positive marginal zone lymphoma. CONCLUSION: CD5 expression in marginal zone lymphoma is not relevant to the prognosis of the patients, but CD5-positive marginal zone lymphoma seems more likely to transformation to diffuse large B-cell lymphoma.

Improving outcomes in limited-stage de novo CD5+ DLBCL: systemic approaches with consolidative radiation.

CD5-positive diffuse large B-cell lymphoma (CD5+ DLBCL) is characterized by poor prognosis after frontline immunochemotherapy. This retrospective study investigated the effect of consolidative radiation after systemic treatment in newly diagnosed stage I-II de novo CD5+ DLBCL. In this study, 22 patients received consolidative radiotherapy (RT) after immunochemotherapy (chemotherapy + RT group) and 28 patients received chemotherapy alone. Patients who received chemotherapy alone had a significantly shorter PFS and OS than those who received consolidative radiotherapy. The five-year PFS rates for the chemotherapy + RT and chemotherapy alone groups were 75.1% and 40.5%, respectively. The five-year OS rates for the chemotherapy + RT and chemotherapy alone groups were 84.2% and 50.1%, respectively. Even after receiving consolidation radiotherapy, 2/22 (9.1%) patients experienced CNS relapse. Age >60 years and lack of radiotherapy were independent prognostic factors for PFS and OS. Ki-67 (≥80%) was an independent prognostic factor for poor OS. Consolidative radiotherapy might be a good option for stage I-II CD5+ DLBCL, but further investigation is needed.

[Design of double ultrasound pulse transmitting and receiving circuits used in ultrasound thermometry].

This paper introduces double ultrasound pulse transmitting and receiving circuits used in ultrasound thermometry. Using the circuits, double ultrasound pulses could be made synchronously to satisfy the requirements of ultrasound thermometry, and the weak ultrasound echo signals are received successfully. The crux experiment waveform offered shows that the circuits have high reliability.