This study will evaluate a virtual mental health parenting stepped-care intervention (I-InTERACT-North) to determine if the program works to improve positive parenting skills and child behaviour among families with children born with Congenital Heart Disease (CHD). Recruitment will target children ages 3-9 years old from SickKids. We will also evaluate the acceptability and feasibility of the program among children and families to inform future delivery and multi-site trials. Results will evaluate whether I-InTERACT-North can improve parenting and child behaviour in these families and inform future best clinical practices for this population.

A \[68\]Ga-HA-DOTATATE PET/CT or PET/MRI scan is a nuclear medicine test used to create pictures of the whole body that will show where somatostatin receptors are found, including on tumours. Somatostatin receptors are found on most neuroendocrine tumours (NETs), and some other types of tumours. Currently at the Cross Cancer Institute, most patients with suspected somatostatin positive tumours (e.g. NETs) have an In-111 Octreotide (Octreoscan™) scan. A scientific study has shown that a scan with a similar product (\[68\]Ga-DOTATATE) is more accurate than an Octreoscan™. This study will look at \[68\]Ga-HA-DOTATATE, a product virtually identical to \[68\]Ga-DOTATATE. The purpose of this study is to: 1) demonstrate the safety of \[68\]Ga-HA-DOTATATE; and 2) confirm that \[68\]Ga-HA-DOTATATE PET/CT or PET/MRI is effective at diagnosing somatostatin positive tumours.

Intravitreal injection (IVI) is an ophthalmological procedure used worldwide to treat ocular conditions. Its use has been steadily increasing for several years, because this method of drug delivery minimizes systemic exposure and allows for intraocular drug levels not achievable through systemic or topical drug administration. IVI of agents such as anti-vascular endothelial growth factor (anti-VEGF) or corticosteroids are efficacious for several retinal diseases, including age-related macular degeneration, macular edema due to retinal vein occlusion or diabetic macular edema, and uveitis, among others. But IVIs are not without their risk of complications and the most feared of which is infectious endophthalmitis, which can occur following intravitreal injections and has potentially devastating visual consequences, including loss of vision and/or the eye itself. Although endophthalmitis´s incidence ranges from 0-0.2% per infection, the cumulative risk for patients under sequential treatment may equate to more than 1% after 2 years of treatment. Endophthalmitis management following IVIs generally consists of a vitreous tap and inject (TAI) and/or a pars plana vitrectomy (PPV) with intravitreal injection of antibiotics. However, there is no consensus on the optimal treatment of IVI-related endophthalmitis. Thus, an established treatment protocol for IVI-related endophthalmitis is warranted to optimize patient outcomes. The aim of this study is to determine whether PPV or TAI is superior for the treatment of IVI-related endophthalmitis.

The development of stereotactic body radiation therapy (SBRT) for the treatment of stage I non-small cell lung cancer (NSCLC) has inspired a close partnership between thoracic surgery and radiation oncology. In this study, patients with stage I NSCLC will be screened prior to treatment and will be consented after their treatment plan has been determined. Prospectively collected patient-reported outcomes (PROs) will be collected for 3 years, as will outcomes data.

The main objective of this pilot study is to evaluate the impact of a self-management intervention using wearable biometric technology on post-COVID-19 syndrome. In addition, this pilot-study will provide information regarding validity, feasibility, patient compliance and satisfaction, valuable for the design of a future large-scale study.

This study looks at the difference in surgical scar outcomes between two different surgical incision methods during thyroid surgery: scalpel vs electrocautery. Patients who are already scheduled for thyroid surgery with Dr. Sam Wiseman, Endocrine Surgeon at St. Paul's Hospital, and that meet the eligibility criteria for this study will be invited to participate. After signing the informed consent form, participants will be randomized into either one of the two incision methods, but will not know which one they receive. There will be two follow-up time points: one at 6 and another at 12 months post-operative. At these time points the research team will send a letter to the participant asking them to rate the appearance of their surgical scar. They will also be asked to take a picture of their scar and send it back to the research team, so that the research team can make an assessment of their surgical scar. The study concludes when the 12 month follow-up is complete.

This study is a multicenter prospective randomized control trial comparing hardware retention (HR) to removal of hardware (RH).

This Pilot Phase 2A study will investigate the safety, tolerability, and pharmacokinetics (PK) of ES-481 in adult patients with essential tremor.

The length of hospital stay after total hip and knee arthroplasty is determined based on the successful mobilization of the patients post surgery. Fast track pathways involving early mobilization and discharge of the patient on the same day of surgery, shortens the hospital stay and reduces the risk of adverse effects. The long acting LA (bupivacaine) is most commonly used in spinal anesthesia for arthroplasty surgeries and is associated with a prolonged motor and sensory block. In contrast, hypobaric bupivacaine and hypobaric mepivacaine helps in achieving the desired block level with smaller dosage and shorter onset time and faster recovery when compared to long acting local anesthetics. The aim of the study is to observe the effects of hypobaric local anesthetics ( bupivacaine and mepivacaine ) in patients undergoing unilateral total hip or knee arthroplasty in terms of time to onset and time to recovery of the block and also its effect on hemodynamic stability and time to mobilization after surgery. This study will allow the investigators to recommend optimal dosing strategies that in turn will help in faster recovery from spinal anesthesia and early mobilization thereby reducing harmful outcomes.

A \[18\]F-PSMA-1007 PET/CT or PET/MRI scan are nuclear medicine tests used to create pictures of the whole body that may show where cells that express Prostate-Specific Membrane Antigen (PSMA) are found. PSMA is a transmembrane protein that is overexpressed in the majority of prostate cancers. PSMA imaging utilizes this overexpression, by binding on the transmembrane receptor and internalization in the cancer cells. The internalized isotope can then be imaged with the use of a PET/CT or PET/MRI scanner and show where cancer cells may be present in the body. This imaging modality has been shown to be superior to conventional imaging, such as bone scan and CT, in the detection of prostate cancer tumors. The purpose of this study is to: 1) assess the clinical impact of a \[18\]F-PSMA-1007 scan on patient management plans; 2) assess the diagnostic effectiveness of a \[18\]F-PSMA-1007 scan in participants with known or suspected metastatic prostate cancer, as compared to standard of care CT chest, abdomen, pelvis and bone scan; 3) evaluate the safety of \[18\]F-PSMA-1007; and 4) assess potential correlations of PSMA level of uptake in certain tumors with cancer biologic markers such as PSA and Gleason score.