Given a passage with a context and an answer, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.

Context: Blood oxygen level-dependent (BOLD) MRI has been effectively used to monitor changes in renal oxygenation. However, R2* (or T2*) is not specific to blood oxygenation and is dependent on other factors. This study investigates the use of a statistical model that takes these factors into account and maps BOLD MRI measurements to blood pO2.', "Spin echo and gradient echo images were obtained in six Sprague-Dawley rats and R2 and R2* maps were computed. Measurements were made at baseline, post-nitric oxide synthase inhibitor (L-NAME), and post-furosemide administration. A simulation of each region was performed to map R2' (computed as R2*-R2) to blood pO2.", 'At baseline, blood pO2 in the outer medulla was 30.51.2 mmHg and 51.95.2 mmHg in the cortex, in agreement with previous invasive studies. Blood pO2 was found to decrease within the outer medulla following L-NAME (P<0.05) and increase after furosemide (P<0.05). Blood pO2 in the cortex increased following furosemide (P<0.05).
Answer: Model-derived blood pO2 is sensitive to pharmacological challenges, and baseline pO2 is comparable to literature values. Reporting pO2 instead of R2* could lead to a greater clinical impact of renal BOLD MRI and facilitate the identification of hypoxic regions. Magn Reson Med, 2016. ©️ 2016 International Society for Magnetic Resonance in Medicine.
Is bOLD quantified renal pO2 sensitive to pharmacological challenges in rats?

Context: To investigate the possibility of using a modified reverse transfer function (RTF) measurement intraoperatively during surgery of a new transcutaneous bone conduction hearing implant to evaluate the status of the device.', 'Tests were performed on a cadaver skull (preclinically) and two conductive hearing loss patients implanted with a new transcutaneous bone conduction implant. During intraoperative activation, the RTF was measured using a microphone attached perpendicularly and directly to the skin in the middle section of the forehead.', 'The RTF could be measured for all frequencies from 500 to 6, 000 Hz.
Answer: The usage of an intraoperative RTF measurement may be a good method to verify the mechanical coupling of the bone conduction floating mass transducer and to test the functional integrity of the implant in an objective way.
Do intraoperative measurement for a new transcutaneous bone conduction hearing implant?

Context: To investigate how affects electrical-conduction function following myocardial infarction (MI) in rats.', 'Thirty SD rats of either sex (220-250 g) were anesthetized using chlorine hydrate and were randomly divided into three groups: control group, MI group and transplantation group. The field potential (FP) morphology and activation-conduction duration were recorded with microeletrode array techniques.', 'The MEA recorded clear FP morphology. Activation-conduction duration was (6.5 2.12) ms in the control group, (17.5 3.54) ms in the MI group, and (9.13 1.31) ms in the transplantation group.
Answer: EHT transplantation can improve electrical-conduction and function of MI rats.
Does engineered heart tissue transplantation alter electrical-conduction function in rats with myocardial infarction?