Adjustable stand and use thereof

A system, comprising:

• an imaging apparatus;
• and
• a stand connected to the imaging apparatus, the stand comprising:
• a supporting component;
• a rotation component rotatably connected to the supporting component, configured to rotate about a first rotation axis, wherein the rotation component includes a plurality of first ratchet teeth arranged along a first circle on a first side of the rotation component;
• a rotation limiting component, wherein the rotation limiting component includes a plurality of second ratchet teeth arranged along a circle on a second side of the rotation limiting component, the second side of the rotation limiting component facing the first side of the rotation component;
• and
• an adapter ring placed between the rotation component and the rotation limiting component, wherein the adapter ring includes a plurality of third ratchet teeth arranged along a third circle on a third side of the adapter ring and a plurality of fourth ratchet teeth arranged along a fourth circle on a fourth side of the adapter ring,
• wherein the plurality of third ratchet teeth are engaged with the plurality of first ratchet teeth and the plurality of fourth ratchet teeth are engaged with the plurality of second ratchet teeth.