What is the ruling on ghusl for medical examinations, knowing that it invalidates the fast, and the sooner they are performed, the greater the chance of detecting the illness?

If a woman needs urgent medical examinations that necessitate breaking her fast, such as drinking liquids before an X-ray, and delaying them would delay recovery, then she is considered like a sick person and must make up the day she broke her fast. If these examinations necessitate the emission of semen: if it is emitted with desire, ghusl (ritual bath) is obligatory, and the fast is broken, and it must be made up. However, if it is emitted without desire, then neither ghusl nor breaking the fast is required, and the fast remains valid. If these examinations can be performed at night, then that is determined, and it is not permissible to perform them during the day.